The invention mainly relates to the technical field of food processing, and discloses a preserving method of pickled chili peppers. The preserving method comprises the following steps of preparing rawmaterials; performing fermentation for the first time; performing fermentation for the second time; and performing packing. The method is simple, and the obtained pickled chili peppers are low in salinity, rich in fragrance, moderate in sour and hot degree, soft and crisp in mouth feel, free from any additive, safe and healthy. The species of the pickled chili peppers in the market are increased,and nutrient and health requirements of consumers are met. Fresh chili peppers are thoroughly cleaned, then staged drying is performed, cutting up is performed, and then preserving is performed, so that the moisture of the chili peppers is reduced, and the tissue of the chili peppers is softened; and therefore, the pickled chili peppers are soft and crisp in mouth feel. Soft and mashed mouth feelof conventional pickled chili peppers is changed, the condition that the pickled chili peppers are cut when being eaten is avoided, and the pickled chili peppers are convenient to eat. The chili peppers are cut up, soybean oligosaccharides are added, and then fermentation is performed with lactic acid bacteria, so that the pH is reduced, micromolecular fragrance and nutrient components are increased, and the bright color and the soft and crisp mouth feel of the chili peppers are maintained. Seasoning is added, and then fermentation is performed, so that the pickled chili peppers are rich in mouth feel, the appetite is promoted, and the pickled chili peppers are moderate in sweet and salty degree.